Boat hull construction



June 3, 1941. D, B. JOHNSON BOAT HULL CONSTRUCTION Filed June 10, 1939 ////////&n///////////// INVENTOR. Dea/2 B. (fo/mson BY ORNEY.

Patented June 3, 1941 UNITED STATES PATENT OFFICE BOAT HULL CONSTRUCTION Dean B. Johnson, La Mesa, Calif., assignor to San Diego Marine Construction Co., San Dego, Calif., a corporation of California Application June 10, 1939, Serial No. 278516 Claims.

My invention relates to the Construction of the portion of the hull of a wooden boat near the keel and the objects of my invention are:

First, to provide storage space in the bottom of the hu-ll of wooden boa'ts in substitution for the floor timbers, kelsons, sister kelsons and engine bearers made of reinforced metal;

Second, to provide a Construction of this class which conserves the space in the extreme lower side of wooden boat hulls for storage or like purposes;

Third, .to provide an assembly Construction of this class which reinforces and strengthens the wooden hull boat at its most vita'l portion;

Fourth, to provide a construction of this class which 's applicable for use in connection with various types of wooden hull boats;

Fifth, to provide a Construction of this class in which the space usually occupied by the floor timbers, kelsons, sister kelsons and engine bearers is divided up into a p lurality of storage spaces for fuel supply or the like separated by substant-ial longitu'dinal and ,transverse reinforcing, vertical partitions;

sixth, to provide a construction of this class in which metal kelsons are substituted for the floor timbers in the wooden hull boats; and

Seventh, to provide a construction of this class which is very simple and economical of construction, easy to install, efilcient in i ts action or which will not read'ly deteriorate or get out of order.

With these and other objects in View as will appear hereinafter, my invention consists of certain novel features of Construction, combination and arrangement of parts and pontions as will be hereinafter described in detail and particularly set forth in the appended claims, reference being had to the accompanying drawing and to the characters of reference thereon which form a part of this application in which:

Figure 1 is a longitudinal sectional View of my novel boat hull Construction taken from the line |-l of Fig. 2 showing some of the portions in elevation to faclitate the illustration; Fi g. 2 is an enlarged transverse sectional view taken from the line 2--2 of Fig. 1.

Similar characters of reference reter to similar parts and portions throughout the views of the drawing.

The keel I, shoe 2, garboard p1 anking`3, general hull planking 4, bottom metal plate 5, upper metal plate 6, longitudinal vertical plates I, 8 and 9 and transverse bafile plates n constitute the principal parts and portions of my boat hull Construction.

The keel I is of conventional wooden keel Construction and it is faced with the conventional shoe 2 of reinforcing metal plate. The base planks r3 and hul-l planking 4 are also of conventional type. The lower ones on opposite sides, however, are secured to a steel bottom plate 5 which is provided with a straight portion Ea which rests long'tudlnally on the upper side of the keel l and extends ait to near the stern of the boat and forwardly to near the bow of the boat. It is provided with inclined portions 5b and 5c conforming to the an gle of the boat bottom from the keel outwardly on opposite sides, as shown best in Fig. 2 of the drawing. Secured substantially horizontally across from the member 517 to the member 5c some distance above the portion Sa is the upper metallic plate 6 leaving a large storage space substantially the .full length of the -bo 'at between the lower plate 5 and the upper plate 6.

Positioned longitudinally of the boat hull and centrally of the portion Sa in a vertical position is a middle vertical longitudinal partition 7 which extends from the portion Sa at its middle to the middle of the upper metal plate 6, shown best in Fig. 2 of the drawing, which forms a rein forced battle and compartment partition. On opposite sides of this plate 1 in spaced relation therefrom substantially intermediate said plate 'I and the side edges of .the plate B are other longitudinal vertical plates 8 and 9 which extend longi tudinally in vertical position between the members 5b and 5c and the plate 6 forming further reinforcing and compartment partitions extending substantially the full length of the boat bull.

Positioned transversely in the space between the bottom metal plate 5 and the upper metal plate E and extending between the partitions 1, 8 and 9 forming a large number of separate compartments are the transverse bafile plates I 0 shown best in Fig. 1 of the drawing.

It will be here noted that ,the compartments formed separately by the lower plate '5, upper plate 6, partitions 1, 8, e and bafle lo may be utilized for various purposes such as fuel for operating the boat or for any kind of storage purposes and it is obvious that these storage products may be shifted from one compartment to another for maintaining the best equilibrium, both thwart ship and fore and aft as desired; and that .the upper plate 6 serves the same function as the upper side of the floor timbers kel sons and engine bearers o-f the conventional Wooden hull boat and may be made of ample strength and provide effective storage space.

Though I have shown and described a particular Construction, combination and arrangement of parts and portions, I do not wish to be limited to this particular Construction, combination and arrangement, but desire to include in the scope of my invention the Construction, combination and arrangement substantially as set forth in the appended claims.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a. boat hull Construction of the class described, the combination of a Wooden keeLwooden planking, a metallic plate supported across the upper side of said keel and diverging upwardly in opposed direction in angular V-shaped form on opposite sides of said keel and forming the' support for said Wooden planking, and ?a 'substantally horizontal plate connected therewith at its side extremities and extending longitudinallyof the keel.

7.2. In a. boat hull Construction of the class described, the combination of `a wooden keel, Wooden planking, a metallic plate supported across the upper side of said keel andldiverging pwardly in opposed direction in angular V-shaped form on e opposite sides of said keel and forming the: sup

port for said Wooden. plankng, a substantially horizontal plate connectedtherewthat its side extremities and extending longitudinally of the keel, .and a plurality of longitudinal substantially vertical varying depth` partitions connecting said first mentioned angularplate With said substantially horizontal plate.

3., In a boat hull Construction of the .class described, the combination of a Wooden keel, Woodenplanking, a metallicplate supported across the upper side of said keel and ndiverging upwardly in opposed direction in angular V-shaped form on opposi-te sides of said keel and forming the support for said Wooden planking, a substantially horizontal plate connected therewith at its side extremities and extending longitudinally of the keel, a plurality of longitudinal subs'tantially vertical varying depth partitions connecting said first mentioned angular plate With said substantially horizontal plate, and a plurality of transverse baffie partitions connected therewith between said angular and longitudinal plates and 'forming a plurality of separate enclosed varying sized storage compartments.

4. In a boat hull Construction of the class described, the combination With a. wooden boat hull With a Wooden keel of metallic kelsons and engine support formed of hollow storage compartments including a, substantially horizontal metallic upper plate, an angular V-shaped lower plate With a substantially horizontal middle portion resting 'on said Wooden keel and a plurality of Vertical reinforcing partitions connected therewith and extending from said upper pla te to said lower plate.

5. In a boat hull Construction of the class described, the combina'tion with a Wooden boat hull With a wooden keelof metallic kelsons and engine support formed of hollow storage Compartments including a substantially horizontal metallic upper plate, an angular V-shaped lower plate With a substantially horizontal middle portion resting on said Wooden keel and a plurality of Vertical reinforcing pa-rtiticns connected therewith and extending from said upper plate to said lower plate, said reinorcing partitions extending both longitudinally of the looat and transversely thereof and saidangular V-shaped lower plate with the horizontal portion forming the support for the keel and Wooden hull.

DEAN B J OHNSON 

